# -*- coding:utf-8 -*-
"""
Created on 31.01.2010

@author: r4smus
"""

from Tkinter import *
window = Tk()
label = Label (master=window, text= "  ")
def greeting():
    label.config(text= 'Hallo')
button = Button(master=window, text='Sage Hallo', command=greeting)
label.pack()
button.pack()
window.mainloop()